FILE - This undated photo released by Obama for America shows Barack Obama with his grandparents, Stanley Armour Dunham and Madelyn Lee Payne Dunham in New York City, during a visit with Obama, who was a student at Columbia University. How unthinkable it was, not so long ago, that a presidential election would pit a candidate fathered by an African against another condemned as un-Christian. And yet, here it is: Barack Obama vs. Mitt Romney, an African-American and a white Mormon, representatives of two groups and that have endured oppression to carve out a place in the United States. How much progress has America made against bigotry? (AP Photo/Obama for America)